RV3028 Real Time Clock Breakout

Note

This is just a Python library to interface with the RV3028 and does not install the RTC as a time source for Raspbian.

In order to set up as a RTC in Raspbian you will need to add something like the following to /boot/config.txt:

dtoverlay=i2c-rtc,rv3028,backup-switchover-mode=1

More information is available in the i2c-rtc dtoverlay documentation: https://github.com/raspberrypi/linux/blob/0d72d83ec92acda1e8cbad0d4213a5ec2b3f2e1b/arch/arm/boot/dts/overlays/README#L1079

Installing

Stable library from PyPi:

• Just run python3 -m pip install rv3028

Latest/development library from GitHub:

• git clone https://github.com/pimoroni/rv3028-python
• cd rv3028-python
• sudo ./install.sh --unstable

Requirements

This library depends upon smbus:

sudo apt install python-smbus   # Python 2
sudo apt install python3-smbus  # Python 3

Changelog

0.0.5

• Bugfix: corrected BCD month to include Oct, Nov, Dec

0.0.4

• Port to i2cdevice>=0.0.6 set/get API
• Cleaned up i2cdevice bindings
• Corrected 12-hour and am/pm bits in bindings

0.0.3

• Bugfix to support days of month in the 20s

0.0.2

• Major bugfix to support hours past 8PM
• Other minor fixes and improvements

0.0.1

• Initial Release